wheel alignment AUDI TT ROADSTER 2018 Owners Manual

0 a, .... N
Tire wear/damage
Fig. 188 Tire profile: treadwear indica­
tor
Tire wear
Check the tires regular ly for wear.
-Inflation pressure that is too low
or high can increase tire wear
considerably.
-Driving quickly through curves, rapid acceleration and heavy
braking increase tire wear.
-Have an authorized Audi dea ler
or authorized Audi Service Facili­
ty check the wheel alignment if
there is unusual wear.
-Have the wheels rebalanced if an imbalance is causing noticeable
vibration in the steering wheel.
If you do not, the tire s and other
vehicle components could wear more quickly.
~ l) Obey any applicable regulations in your 0
[;:; country. 00
Wheels
Treadwear indicator
Original equipment tires contain
treadwear indicators in the tread
pattern, which are bars that are 1/16 in (1.6 mm) high and are
spaced evenly around the tire per­ pendicular to the running direc­
tion
c:> fig. 188. The letters "TWI"
or triangles on the tire sidewall indicate the location of the tread­
wear indicators.
The tires have reached the mini ­
mum tread depth
l) when they
have worn down to the treadwear
indicators. Replace the tires with
new ones
c:> ..1,,. .
Tire rotation
Rotating the tires regularly is rec­
ommended to ensure the tires
wear evenly. To rotate the tires, install the tires from the rear axle
on the front axle and vice versa.
This w ill allow the tires to have
approximately the same length of
service life.
..,.
253

Cl co .... N ,....
N ...... 0 ,....
Vl co
-To reduce the risk of injury, support the ve­
hicle securely with suitab le stands if work is
to be performed underneath the vehicle.
- To help prevent injury to yourself and your
passengers:
- Do not ra ise the vehicle until you are sure
the jack is securely engaged .
- Passengers must not remain in the vehicle
when it is jacked up.
- Make sure that passengers wait in a safe
p lace away from the vehicle a nd well away
from the road and t raffic.
- Make sure jack posit ion is correct, adjust
as necessary and then cont inue to raise
the jack.
- If work has to be done under the v ehicle,
ensure that it is safely s upported on su ita­
b le stands
-risk of inju ry!
- Never start the engine when the vehicle is
on the jac k
-risk of accident!
(D Note
Do not lift the vehicle by the sill . Position the
veh icle jack* only at the des ignated mounting
points on the side s il l. Otherwise, yo ur vehicle
w ill be damaged.
Removing and mounting a wheel
Fi g. 2 01 Wheel : internal hex socket to turn the wheel
bolts
Em ergen cy as sis tanc e
Fig. 202 Whee l: alignment pin in the top ho le
Removing a wheel
.,. Remove the top wheel bolt completely using
the hex socket in th e screwdriver handle (in the
ve hicle tool kit) ¢
fig. 201 and p lace it on a
clean s urface.
.,. Then insta ll the alignment pin (from the ve hicl e
too l kit) by hand into the empty wheel bolt hole
<=> fig . 202.
.,. Remove the rest of the wheel bo lts.
.,. Remove the wheel <=>CD. The alignment pin re-
mains in the hole while doing this.
Install a wheel
Read the directions on <=> page 2 78 when in stal­
ling unidirectiona l tires.
.,. Slide the wheel on over the alignment pin ¢ (D .
.,. Insta ll the whee l bolts and tighten gently us ing
t he hex socket .
.,. Remove the alignment pin and also tighten the
remain ing whee l bolt .
.,. Carefully lower the vehicle using the vehicle
jack* .
.,. Tighten the wheel bolts in a d iagonal pattern
using the wheel wrench .
The wheel bolts must be clean and loosen/tight­
en easily . Check the contact surfaces for the
whee l and hub. Contam inants on these su rfaces
must be removed before installing the wheel.
_&. WARNING
Neve r use the hex socke t in the screwd river
handle to t igh ten the wheel bo lts . Using the
h ex socket will not ac hieve the required t ight­
ening torque, which increases the risk of an
accident .
..,.
277

Index
A
A/C (climate control system) . . . . . . . . . . . . . 52
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 292
Active lane assist . . . . . . . . . . . . . . . . . . . . . . 72
Activating vibration warning . . . . . . . . . . . . 75
Adjusting steering time . . . . . . . . . . . . . . . . 75
Cleaning the camera area . . . . . . . . . . . . . 267
Indicator l ight . . . . . . . . . . . . . . . . . . . . . . . 73
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Switching on/off . . . . . . . . . . . . . . . . . . . . . 73
Adaptive light . . . . . . . . . . . . . . . . . . . . . . . . . 78
Adaptive light (indicator light) . . . . . . . . . . . 16
Adjusting the air d istr ibut ion (climate control
system) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Adjusting the air vents . . . . . . . . . . . . . . . . . . 53
Adjusting the center console lighting . . . . . . 41
Adjusting the sound . . . . . . . . . . . . . . . . . . . 177
Adjusting the temperature (climate contro l
system) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Advanced Airbag System Children
....... .. .............. ....
Components ...... .............. ... .
Front airbags ..... .............. ... .
How the components work together ... .
Ai rba g .. .. .. .. .. ............. .. .. .. .
I ndicator light .... .............. .... .
Airbag system .. .. .. .............. ... .
Advanced Airbag System ....... .. .. .. .
Care
. . .. .. .. .. ............. .. .. .. .
Ch ild rest raints .............. .... .. .
Components (front airbags) .......... .
Danger of fitting a child safety seat on the
front passenger seat ................ .
Disposal ... .. .. ............. .... .. .
Front airbags ... ............. .... .. .
H ow do the front airbags work? . .. .. .. .
H ow many airbags does my vehicle have?
Important information .............. .
I mportant safety instructions on the knee
airbag system . .. ............. .. .. .. .
Knee airbags .. .. ............. .... .. .
Monitoring ....... .............. ... .
PASSENGER AIR BAG light ........... .
Repairs
Safety instructions ................ .. .
Side airbags .. .. ............. .... .. .
294
218
201
199
202
194 14
213 198
208
218
201
195
208 198
203 201
194
211
210
205
206 208
207
212 Warning/Indicator
lights . . . . . . . . . . . . . 205
When must the system be inspected? . . . 205
Ala rm system
refer to Anti-theft ala rm system . . . . . . 22, 27
Alignment pin (tire change) . . . . . . . . . . . . . 272
All-weather lights . . . . . . . . . . . . . . . . . . . . . . 38
All season tires . . . . . . . . . . . . . . . . . . . . . . . 259
All wheel drive . . . . . . . . . . . . . . . . . . . . . . . . 89
Alte rnative routes . . . . . . . . . . . . . . . . . . . . . 141
Ambient lighting . . . . . . . . . . . . . . . . . . . . . . 40
AMI
refer to Audi music interface . . . . . . . 160, 161
Android Auto
refer to Audi smartphone interface . . . . . 171
Announcements (sett ings)
refer to Voice guidance . . . . . . . . . . . . . . . 141
Anti-freeze Windshield washer system . . . . . . . . . . . . 243
Anti- lock braking system (ABS) . . . . . . . . . . . 86
Ant i-slip regulat ion . . . . . . . . . . . . . . . . . . . . 86
Anti-theft alarm system . . . . . . . . . . . . . . . . . 27
Apple CarPlay
refer to Audi smartphone interface . . . . . 171
Armrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Ashtray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Aspect ratio (video) . . . . . . . . . . . . . . . . . . . 165
Audi connect . . . . . . . . . . . . . . . . . . . . . . . . . 124
Data connection . . . . . . . . . . . . . . . . . . . . . 130
Data protection . . . . . . . . . . . . . . . . . . . . . 132
Services (overview) . . . . . . . . . . . . . . . . . . 126
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Audi magnetic ride
refer to Suspension control . . . . . . . . . . . . . 78
Audi music interface . . . . . . . . . . . . . . . . . . . 160
Audi music stream
refer to Wi-Fi . . . . . . . . . . . . . . . . . . . . . . . 158
Audio files . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Audio player
B luetooth audio player . . . . . . . . . . . . . . . 157
Wi-Fi audio player . . . . . . . . . . . . . . . . . . . 158
Audio track . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Audi Service Repair Manuals and Literature 290
Audi smartphone interface ......... 171,175
Audi virtual cockpit (instrument cluster) . . . . 8